CN212475985U - Lifting platform - Google Patents
Lifting platform Download PDFInfo
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- CN212475985U CN212475985U CN202021477323.7U CN202021477323U CN212475985U CN 212475985 U CN212475985 U CN 212475985U CN 202021477323 U CN202021477323 U CN 202021477323U CN 212475985 U CN212475985 U CN 212475985U
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Abstract
The utility model discloses a lifting platform, which comprises a lifting platform plate and a frame base positioned below the lifting platform plate, and is characterized in that N screw lifting components, a driving shaft component and a transmission chain mechanism are uniformly distributed on the frame base, the N screw lifting components are arranged into any polygon, wherein N is a natural number more than or equal to three, and each screw lifting component comprises a screw, a nut and a screw support; the driving shaft assembly comprises a driving motor, a driving shaft, a driving support and two bevel gears. The utility model discloses a lift platform is apart from not changing between lift in-process fulcrum to make lift platform lift in-process stability can not change, stability is good, and platform face lift position is accurate, and bearing capacity is big.
Description
Technical Field
The utility model relates to a lifting platform.
Background
At present, most of lifting platforms adopt X-shaped structures, hydraulic cylinders are used as lifting power, and a single hydraulic cylinder lifting structure is adopted. At present, in order to increase the lifting height, a method of longitudinally stacking a plurality of X structures is adopted for a lifting platform. There are four supporting points between X type structure and the bearing platform face, and the fulcrum is close to each other at the ascending in-process of lifting platform face to the fulcrum that makes four fulcrums form constantly reduces, and whole lifting platform face stability constantly reduces, and the security correspondingly reduces. The bearing capacity of the lifting platform with the X-shaped structure is determined by the bearing capacity of a single X-shaped structure, and the bearing capacity of the X-shaped lifting platform cannot be increased by a method of transversely increasing the number of the X-shaped structures.
The conventional lifting platform has the common defects of low bearing capacity and poor transverse stability, is mostly used for bearing occasions with low requirements and is not high in working stability.
At present, a lifting platform which can bear heavier load and can stably lift is not available.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's defect, providing a lifting platform, the distance does not change between lift in-process fulcrum to make lifting platform lift in-process stability can not change, stability is good, and platform face lift position is accurate, and bearing capacity is big.
One technical scheme for achieving the purpose is as follows: the utility model provides a lifting platform, includes lifting platform board and is located a frame base of this lifting platform board below, the equipartition has a N screw rod lifting unit, a drive shaft subassembly and a driving chain mechanism on the frame base, arbitrary polygon is arranged into to a N screw rod lifting unit, and wherein N is the natural number more than or equal to three, wherein:
each screw lifting assembly comprises a screw, a nut and a screw support, the screw is mounted in the nut, the top of the screw is connected with the lifting platform plate, and the screw support is embedded in the frame base; the lower part of the nut is arranged in the screw support through a bearing;
the driving shaft assembly comprises a driving motor, a driving shaft, a driving support and two bevel gears, and the driving support is fixed on the frame base; the drive shaft is coaxially and rotatably supported within the drive mount; the output shaft of the driving motor is horizontally arranged, and one bevel gear is arranged on the output shaft of the driving motor; the other bevel gear is arranged at the lower end of the driving shaft, and the two bevel gears are meshed with each other; the driving motor drives the driving shaft to rotate through the two bevel gears which are meshed with each other;
the transmission chain mechanism is a linkage system which is used for connecting the nuts of all the screw lifting assemblies with the driving shaft of the driving shaft assembly and enabling the nuts of all the screw lifting assemblies to synchronously rotate.
The drive chain mechanism comprises a double-chain wheel sleeved on the top ends of nuts of all screw lifting assemblies and sleeved on the top end of a drive shaft of the drive shaft assembly, the double-chain wheel is divided into an upper chain wheel and a lower chain wheel which are coaxially arranged from top to bottom, the N +1 double-chain wheels are sequentially connected in series through an upper chain and a lower chain which are alternately arranged, the upper chain is connected with the upper chain wheel of any two adjacent double-chain wheels, and the lower chain wheel of any two adjacent double-chain wheels is sequentially connected with the lower chain wheel.
The lifting platform is characterized in that the transmission chain mechanism comprises single chain wheels which are sleeved at the top ends of nuts of all the screw lifting assemblies and the top end of a driving shaft of the driving shaft assembly, and the N +1 single chain wheels are sequentially connected in series through chains.
In the above lifting platform, the chain connecting the N +1 single-chain wheels in series forms a closed-loop chain, and of the N screw lifting assemblies, a part of the screw lifting assemblies is located inside the closed-loop chain, and another part of the screw lifting assemblies is located outside the closed-loop chain;
the screw rod on the screw rod lifting assembly at the inner side of the closed-loop chain adopts a left-thread screw rod, and the nut adopts a left-thread nut;
and the screw rod on the screw rod lifting assembly outside the closed-loop chain adopts a right-thread screw rod, and the nut adopts a right-thread nut.
The above lifting platform, wherein the driving chain mechanism comprises synchronous belt wheels sleeved on the top ends of the nuts of all the screw lifting assemblies and the top end of the driving shaft assembly, and the N +1 synchronous belt wheels are connected in series in sequence through synchronous belts.
The lifting platform is characterized in that the transmission chain mechanism comprises belt pulleys sleeved at the top ends of nuts of all the screw lifting assemblies and the top end of a driving shaft of the driving shaft assembly, and the N +1 belt pulleys are sequentially connected in series through a belt.
In the above lifting platform, the driving motor is a dc motor, a servo motor or a stepping motor.
In the lifting platform, the driving shaft drives the nuts of all the screw lifting assemblies to synchronously rotate through the transmission chain mechanism.
The lifting platform is characterized in that a plurality of rollers are uniformly distributed at the bottom end of the frame base.
By adopting the technical scheme of the lifting platform of the utility model, a multi-screw linkage structure is adopted, the number of screws can be any number more than or equal to 3, the lifting is synchronously carried out by a multi-screw chain linkage system, and the lifting platform is driven by a motor; compared with the prior art, the method has the following advantages:
(1) and the stability is good: the lifting platform of the utility model adopts the multi-screw lifting platform surface, and the position of the screw is not changed in the lifting process, so that the size of the supporting surface formed by the multi-screw can not be changed in the lifting process, thereby ensuring good stability of the lifting platform surface and safe work;
(2) and the bearing capacity is large: the lifting platform of the utility model has the advantages that the number of the supporting and loading screws under the platform can be increased, and the number of the screws can be determined according to the bearing requirement, so the bearing capacity is high;
(3) the lifting position of the platform surface is accurate: the utility model discloses a lifting platform, platform are in going up and down, and upper and lower position is confirmed by the relative position between screw rod and the nut, because screw rod nut helix angle is very little, therefore upper and lower position of platform can be very accurate.
Drawings
Fig. 1 is a structural view of a lifting platform of embodiment 1;
FIG. 2 is a structural view of a screw elevating assembly of the elevating platform of embodiment 1;
FIG. 3 is a structural view of a drive shaft assembly of the elevating platform of embodiment 1;
FIG. 4 is a structural view of a drive chain mechanism of the elevating platform according to embodiment 1；
Fig. 5 is a structural view of the elevating platform of embodiment 2;
FIG. 6 is a structural view of a screw elevating assembly of the elevating platform of embodiment 2;
FIG. 7 is a structural view of a drive shaft assembly of the elevating platform of embodiment 2;
fig. 8 is a structural view of a drive chain mechanism of the elevating platform of embodiment 2.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following detailed description is provided with reference to the accompanying drawings:
example 1:
referring to fig. 1 to 4, a lifting platform is an 8-screw dual-sprocket linkage lifting platform, which includes a lifting platform plate 100 and a frame base 200 located below the lifting platform plate, wherein 8 screw lifting assemblies 1, a driving shaft assembly 2 and a driving chain mechanism are uniformly distributed on the frame base 200, and the 8 screw lifting assemblies are arranged in a polygon.
Referring to fig. 2, each screw lifting assembly 1 includes a screw 11, a nut 12 and a screw support 13, the screw 11 is installed in the nut 12, the top of the screw 11 is connected to the lifting platform plate 100, and the screw support 13 is embedded in the frame base 200; the lower part of the nut 12 is arranged in the screw support 13 through a bearing;
referring to fig. 3, the driving shaft assembly 2 includes a driving motor 21, a driving shaft 22, a driving support 23 and two bevel gears 24, wherein the driving support 23 is fixed on the frame base 200; the drive shaft 22 is coaxially and rotatably supported in the drive mount 23; an output shaft of the driving motor 21 is horizontally arranged, and a bevel gear 24 is arranged on the output shaft of the driving motor 21; another bevel gear 24 is provided at the lower end of the driving shaft 22, and the two bevel gears 24 are engaged with each other; the driving motor 21 rotates the driving shaft 22 by means of two bevel gears 24 engaged with each other. The driving shaft 22 drives the nuts 12 of all the screw lifting assemblies 1 to synchronously rotate through a transmission chain mechanism.
The drive chain mechanism is a linkage system for connecting the nuts 12 of all the screw lifting assemblies 1 with the drive shaft 22 of the drive shaft assembly 2 and synchronously rotating the nuts 12 of all the screw lifting assemblies 1.
Referring to fig. 4, in the present embodiment, the transmission chain mechanism adopts a double-chain wheel transmission system 3, which includes double-chain wheels 31 (see fig. 2 and 3) sleeved on the top ends of the nuts 12 of all the screw lifting assemblies 1 and the top end of the driving shaft 22 of the driving shaft assembly 2, and since the nuts 12 of the 8 sets of screw lifting assemblies 1 and the driving shaft 22 of the driving shaft assembly 2 are in a vertical state, the nuts 12 and the driving shaft 2 are parallel to each other. The double chain wheels 31 are in a horizontal rotating state, the double chain wheels 31 are divided into upper chain wheels and lower chain wheels which are coaxially arranged up and down, all the upper chain wheels are positioned in the same horizontal plane, and all the lower chain wheels are positioned in the same horizontal plane. Totally 9 double sprocket, through the drive chain and the drive chain down that set up in turn and establish ties in proper order, the chain links connects the chain wheel of arbitrary two adjacent double sprocket on the drive, and the chain links the lower sprocket that arbitrary two adjacent double sprocket that turns to in proper order under the drive, forms linkage system like this.
8 screw double sprocket linkage lift platform, when driving motor 21 worked, it is rotatory to drive shaft 22 through two bevel gears 24 of intermeshing, drive shaft 22 rotated and drives double sprocket 31 above it to rotate again, by double sprocket 31 above drive shaft 22 through the chain drive respectively about two adjacent double sprocket rotate, adjacent double sprocket drives its adjacent double sprocket through the chain again and rotates, so as to analogize all double sprocket synchronous rotations, thereby drive all nuts 12 and rotate, the rotation of nut drives the screw rod and makes the motion of rising or falling again, all screw rods 11 rise or descend in step, realize the lift of lift platform board 100.
Example 2:
referring to fig. 5 to 8, an elevating platform is an 8-screw single-sprocket linked elevating platform, which is different from the embodiment 1 in that the driving chain mechanism is different. This kind of 8 screw rod single chain wheel linkage lift platform includes lift platform board 100 and is located a frame base 200 of this lift platform board below, and the equipartition has 8 screw rod lifting unit 1, a drive shaft subassembly 2 and a drive chain mechanism on the frame base 200.
Referring to fig. 6, each screw lifting assembly 1 includes a screw 11, a nut 12 and a screw support 13, the screw 11 is installed in the nut 12, the top of the screw 11 is connected to the lifting platform plate 100, and the screw support 13 is embedded in the frame base 200; the lower part of the nut 12 is arranged in the screw support 13 through a bearing;
referring to fig. 7, the driving shaft assembly 2 includes a driving motor 21, a driving shaft 22, a driving support 23 and two bevel gears 24, the driving support 23 is fixed on the frame base 200; the drive shaft 22 is coaxially and rotatably supported in the drive mount 23; an output shaft of the driving motor 21 is horizontally arranged, and a bevel gear 24 is arranged on the output shaft of the driving motor 21; another bevel gear 24 is provided at the lower end of the driving shaft 22, and the two bevel gears 24 are engaged with each other; the driving motor 21 rotates the driving shaft 22 by means of two bevel gears 24 engaged with each other. The driving shaft 22 drives the nuts 12 of all the screw lifting assemblies 1 to synchronously rotate through a transmission chain mechanism.
The drive chain mechanism 3 is a linkage system for connecting the nuts 12 of all the screw lifting assemblies 1 with the drive shaft 22 of the drive shaft assembly 2 and synchronously rotating the nuts 12 of all the screw lifting assemblies 1.
Referring to fig. 8, in the present embodiment, the transmission chain mechanism adopts a single chain wheel transmission system 5, which includes a single chain wheel 51 sleeved on the top ends of the nuts 12 of all the screw lifting assemblies 1 and the top end of the driving shaft 22 of the driving shaft assembly 2, and since the nuts 12 of the 8 screw lifting assemblies 1 and the driving shaft 22 of the driving shaft assembly 2 are in a vertical state, the nuts 12 and the driving shaft 2 are parallel to each other. The single chain wheel 51 is in a horizontal rotating state, all the 9 single chain wheels 51 are connected in series by the chain 52 to form a linkage system, and the chain 52 is a closed-loop chain.
Among the 8 screw lifting components 1, 4 screw lifting components are positioned at the inner side of the closed-loop chain, and the other 4 screw lifting components 1 are positioned at the outer side of the closed-loop chain, so that when the chain moves, the single chain wheel 51 on the nut 12 of the 4 screw lifting components can rotate to the left, and the single chain wheel 51 on the nut 12 of the other 4 screw lifting components can rotate to the right. In order to make the 8 screws 11 rise and fall uniformly, the screws on the 4 screw lifting components 1 positioned on the inner side of the closed-loop chain adopt left-thread screws, and the nuts adopt left-thread nuts; the 4 screws on the screw lifting component 1 positioned outside the closed-loop chain adopt right-thread screws, and the nuts adopt right-thread nuts, so that the lifting of different steering screws is consistent.
8 screw rod single chain wheel linkage lift platform, when driving motor 21 during operation, it is rotatory to drive shaft 22 through two bevel gears 24 of intermeshing, drive shaft 22 rotates and drives single sprocket 51 above it to rotate again, it rotates to drive adjacent two group's single sprocket about respectively through the chain by single sprocket 51 above the drive shaft 22, adjacent single sprocket drives its adjacent single chain wheel through the chain again and rotates, so as to analogize all single chain wheels synchronous rotation, thereby drive all nuts 12 and rotate, the rotation of nut drives screw rod 11 and makes the motion of rising or falling again, all screw rods 11 rise or descend in step, realize the lift of lift platform board 100.
The utility model discloses a lifting platform, screw rod lifting unit's quantity can 3 group or 3 group above integers, decide as required, unrestricted. The arrangement of the screw lifting components can be polygonal arrangement, and can also be arranged in other shapes according to requirements.
The utility model discloses a lifting platform, sprocket, chain drive among the driving chain mechanism also can replace with belt pulley, belt drive or synchronous pulley, synchronous belt drive. Such as: the transmission chain mechanism comprises synchronous belt wheels sleeved at the top ends of the nuts of all the screw lifting assemblies and the top end of the driving shaft assembly, and all the synchronous belt wheels are sequentially connected in series through synchronous belts. Or the transmission chain mechanism comprises belt pulleys sleeved at the top ends of the nuts of all the screw lifting assemblies and the top end of the driving shaft assembly, and all the belt pulleys are sequentially connected in series through a belt.
The driving motor 21 may be a dc motor, a servo motor, or a stepping motor, in addition to a general motor.
The frame base 200 may be a frame-type fixed support or a movable support, for example, a plurality of rollers 201 are uniformly distributed at the bottom end of the frame base 200, so that the horizontal movement of the platform can be realized.
The utility model discloses a lifting platform, the advantage as follows:
(1) good stability and safe use: because the nut is arranged in the screw support through the bearing, the screw support is fixed on the frame base 200, the position can not be changed due to the lifting of the screw, namely the size of the support surface formed by the lifting platform supporting screw is not changed; therefore, the stability of the lifting platform is obviously better than that of the conventional X-shaped lifting platform in the lifting process, and the lifting platform is safer in use;
(2) and the bearing capacity is large: the number of the screw lifting components is not limited, so that the bearing capacity of the lifting platform can be greatly increased, which is unrealizable by the conventional X-shaped lifting platform;
(3) the lifting position can be accurately controlled: the screw and nut lifting structure is adopted, and the spiral angles of the screw and the nut are generally very small, so that the control precision of the lifting position can reach within 1mm, and the lifting structure is suitable for occasions requiring high precision of the lifting position.
To sum up, the utility model discloses a lift platform, the distance does not change between lift in-process fulcrum to make lift platform lift in-process stability can not change, this kind of novel lift platform's the supporting point quantity can increase according to lift platform's the size of bearing moreover, thereby makes lift platform can bear bigger heavier article.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a lifting platform, includes lifting platform board and is located a frame base of this lifting platform board below, a serial communication port, the equipartition has a N screw rod lifting unit, a drive shaft subassembly and a driving chain mechanism on the frame base, arbitrary polygon is arranged into to a N screw rod lifting unit, and wherein N is the natural number more than or equal to three, wherein:
each screw lifting assembly comprises a screw, a nut and a screw support, the screw is mounted in the nut, the top of the screw is connected with the lifting platform plate, and the screw support is embedded in the frame base; the lower part of the nut is arranged in the screw support through a bearing;
the driving shaft assembly comprises a driving motor, a driving shaft, a driving support and two bevel gears, and the driving support is fixed on the frame base; the drive shaft is coaxially and rotatably supported within the drive mount; the output shaft of the driving motor is horizontally arranged, and one bevel gear is arranged on the output shaft of the driving motor; the other bevel gear is arranged at the lower end of the driving shaft, and the two bevel gears are meshed with each other; the driving motor drives the driving shaft to rotate through the two bevel gears which are meshed with each other;
the transmission chain mechanism is a linkage system which is used for connecting the nuts of all the screw lifting assemblies with the driving shaft of the driving shaft assembly and enabling the nuts of all the screw lifting assemblies to synchronously rotate.
2. The lifting platform according to claim 1, wherein the driving chain mechanism comprises a double chain wheel sleeved on the top ends of the nuts of all the screw lifting assemblies and on the top end of the driving shaft assembly, the double chain wheel is divided into an upper chain wheel and a lower chain wheel which are coaxially arranged up and down, the N +1 double chain wheels are sequentially connected in series through an upper driving chain and a lower driving chain which are alternately arranged, the upper driving chain is connected with the upper chain wheel of any two adjacent double chain wheels, and the lower driving chain is sequentially connected with any two lower chain wheels which are adjacent to and turn to the double chain wheels.
3. The elevating platform as set forth in claim 1, wherein said driving chain mechanism comprises a single chain wheel sleeved on the top ends of the nuts of all the screw elevating assemblies and on the top end of the driving shaft of said driving shaft assembly, and said N +1 single chain wheels are connected in series in sequence by a chain.
4. The elevating platform as claimed in claim 3, wherein said chain connecting said N +1 single chain wheels in series forms a closed-loop chain, and of said N screw lift assemblies, a portion of said screw lift assemblies is located inside said closed-loop chain, and another portion of said screw lift assemblies is located outside said closed-loop chain;
the screw rod on the screw rod lifting assembly at the inner side of the closed-loop chain adopts a left-thread screw rod, and the nut adopts a left-thread nut;
and the screw rod on the screw rod lifting assembly outside the closed-loop chain adopts a right-thread screw rod, and the nut adopts a right-thread nut.
5. The lifting platform as claimed in claim 1, wherein the driving chain mechanism comprises synchronous pulleys sleeved on top ends of nuts of all the screw lifting assemblies and on top end of a driving shaft of the driving shaft assembly, and the N +1 synchronous pulleys are sequentially connected in series through a synchronous belt.
6. The lifting platform of claim 1, wherein the drive chain mechanism comprises belt pulleys sleeved on top ends of nuts of all the screw lifting assemblies and on top ends of drive shafts of the drive shaft assemblies, and the N +1 belt pulleys are sequentially connected in series through a belt.
7. The elevating platform as claimed in claim 1, wherein said drive motor is a dc motor, a servo motor or a stepper motor.
8. The elevating platform as set forth in claim 1, wherein said drive shaft drives said nuts of all of said screw elevating assemblies to rotate synchronously via said drive chain mechanism.
9. The lifting platform of claim 1, wherein a plurality of rollers are uniformly distributed at the bottom end of the frame base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021477323.7U CN212475985U (en) | 2020-07-23 | 2020-07-23 | Lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021477323.7U CN212475985U (en) | 2020-07-23 | 2020-07-23 | Lifting platform |
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| Publication Number | Publication Date |
|---|---|
| CN212475985U true CN212475985U (en) | 2021-02-05 |
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| CN202021477323.7U Active CN212475985U (en) | 2020-07-23 | 2020-07-23 | Lifting platform |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111762719A (en) * | 2020-07-23 | 2020-10-13 | 张海华 | Lifting platform and driving method thereof |
| CN113562660A (en) * | 2021-07-12 | 2021-10-29 | 安徽新涛光电科技有限公司 | High-stability double-speed reducer lifting platform |
| CN113735019A (en) * | 2021-09-06 | 2021-12-03 | 徐州天泓传动设备有限公司 | Lifting platform applying electric push rod |
-
2020
- 2020-07-23 CN CN202021477323.7U patent/CN212475985U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111762719A (en) * | 2020-07-23 | 2020-10-13 | 张海华 | Lifting platform and driving method thereof |
| CN113562660A (en) * | 2021-07-12 | 2021-10-29 | 安徽新涛光电科技有限公司 | High-stability double-speed reducer lifting platform |
| CN113735019A (en) * | 2021-09-06 | 2021-12-03 | 徐州天泓传动设备有限公司 | Lifting platform applying electric push rod |
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